After the recent post on the questionable Koss UR-30 headphones, I finally had to take my set out in the front yard & give them a try... I usually use my Jolly Roger Ultimates that I had previously bought for use with a MXT that came with a bad set...Anyway I plugged them in & was pleasantly surprised that the response appeals more to my likeing than the Jolly Rogers...HMMM...They actually sound "different" & I mean more of a lower tone type for threshold & Iron more of a deep Bass....Two clad Quarters & a 52 wheatie within the next few minutes & I think I actually may prefer them but still am not "REALLY" sure...I'll need to switch them out the next time I'm hunting & get a deep iffy signal just to be sure...Now before everybody starts howling at me, let me say that I haven't tried the other brands so can't comment but I really would like to hear some other "Honest" comparisons...Actually I think I may just head down to the local detector shop & give the different ones a try...To tell the truth, I couldn't believe there would be such a difference...I guess it may all boil down to preference??? Or will different phones REALLY give a person BETTER DEPTH???? Maybe minelab knows something we don't???